the attack on the consulate back september 11th killed ambassador chris stevens and three other americans. >>> this is the busiest day yet on the campaign trail. the presidential candidates and their running mates trying to make the most of the time left in a race that still is too close to call. president obama will travel more than 5,000 miles today alone. steve handelsmans on capitol hill now with more on the candidates' travels. >> reporter: jim, thanks, good evening. the polls are so close now, that all kinds of combinations of wins in the swing states, like virginia, could produce a victory. and so the candidates are trying to hit all the battlegrounds. mitt romney and paul ryan swing state tours started in colorado. they split up. romney going to nevada. where he trails by three points. but claimed he's closing on the president. >> he's out of ideas, and out of excuses, and in november you'll put him out of office. >> reporter: ryan went to ohio, where he and romney closed a five-point gap to one. >> mitt romney and i believe in true compassion in upward mobility. >> reporter: colo